1937
- 1940
President of General Motors Corporation
1940
- 1942
Chairman of the Office of Production Management and member of the National Defense Advisory Commission
1942
- 1944
Appointed a Lieutenant-General in the U.S. Army and named Director of Production, Office of the Under Secretary of War, Washington, D.C.
1944
- 1945
Director of the Air Technical Service Command, Patterson Field, Ohio
1945
Returned to civilian status
Picture source: Courtesy of Shawn M. Bohannon